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 A218876 Triangle read by rows: T(n,k) (1 <= k <= n) = number of non-robust primitive binary sequences of length n and curling number k. 2
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 6, 2, 0, 0, 0, 0, 0, 0, 0, 0, 10, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 26, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,11 LINKS Table of n, a(n) for n=1..91. B. Chaffin, J. P. Linderman, N. J. A. Sloane and Allan Wilks, On Curling Numbers of Integer Sequences, arXiv:1212.6102, Dec 25 2012. B. Chaffin, J. P. Linderman, N. J. A. Sloane and Allan Wilks, On Curling Numbers of Integer Sequences, Journal of Integer Sequences, Vol. 16 (2013), Article 13.4.3. N. J. A. Sloane, On Curling Numbers of Integer Sequences, Combinatorics on Words Conference, Fields Institute, Toronto, April 22, 2013. N. J. A. Sloane, First 36 rows of table Index entries for sequences related to curling numbers FORMULA The triangle in A218869 is the sum of triangles A218875 and A218876. EXAMPLE Triangle begins: [0], [0, 0], [0, 0, 0], [0, 0, 0, 0], [2, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0], [4, 0, 0, 0, 0, 0, 0], [2, 2, 0, 0, 0, 0, 0, 0], [6, 0, 0, 0, 0, 0, 0, 0, 0], [6, 0, 0, 0, 0, 0, 0, 0, 0, 0], [12, 6, 2, 0, 0, 0, 0, 0, 0, 0, 0], [10, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], ... CROSSREFS Cf. A216955, A218869, A218875. Sequence in context: A060175 A358480 A321537 * A028621 A226557 A067898 Adjacent sequences: A218873 A218874 A218875 * A218877 A218878 A218879 KEYWORD nonn,tabl AUTHOR N. J. A. Sloane, Nov 15 2012 STATUS approved

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Last modified June 5 02:21 EDT 2023. Contains 363130 sequences. (Running on oeis4.)